Typo, the 3rd to last paragraph should read: Or I could hack *rfnoc_fir_cci()*. I started this by replacing int vectors with std::complex vectors everywhere FIR taps were referenced in the in-tree module's C++ library but I stopped when it traced up to block.h because that may affect other modules.
On Tue, Aug 8, 2017 at 2:56 AM, Andrew Lanez <switchla...@gmail.com> wrote: > Hi, > > I am developing a FIR filter that will eventually accepts complex taps > reprogrammable during runtime. As a first iteration, I want to verify it > works like the in-tree module with int_vector real taps. So I configure the > settings register in OOT module's .xml file to take int_vector taps but > running it returns: > RuntimeError: RuntimeError: not yet implemented: int_vector > > I guess it's because the in-tree module's ettus.rfnoc_fir_cci() make > function supports int_vector whereas my rfnocmodtool generated make > function hf_chlizer.fir() does not. > > So I changed my OOT module's .xml to use ettus.rfnoc_fir_cci() instead of > hf_chlizer.fir() and output shows both I and Q samples are filtered > identically by real taps. > > But ettus.rfnoc_fir_cci() does not seem to support complex_vector taps. So > I must revert to hf_chlizer.fir() in which case I get: > RuntimeError: RuntimeError: Invalid block definition in > /home/switchlanez/rfnoc/share/uhd/rfnoc/blocks/fir.xml: RuntimeError: > Found invalid arguments for block fir. > > Or I could hack hf_chlizer.fir(). I started this by replacing int vectors > with std::complex vectors everywhere FIR taps were referenced in the > in-tree module's C++ library but I stopped when it traced up to block.h > because that may affect other modules. > > 1) What's the best approach to implement a vector of complex taps > reprogrammable during runtime? > > 2) My verilog code assumes one complex tap is 32 bits (leftmost 16 bits > for I, rightmost 16 bits for Q) and formats complex samples the same > (in-tree module also handles complex sample this way). Will UHD > automatically convert complex floats incoming from the host to sc16 for the > embedded settings registers? > > Thanks, > Andrew >
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